WO1997048703A1 - Process for preparing tetrahydroimidazoquinolinamines - Google Patents

Process for preparing tetrahydroimidazoquinolinamines Download PDF

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Publication number
WO1997048703A1
WO1997048703A1 PCT/US1996/016913 US9616913W WO9748703A1 WO 1997048703 A1 WO1997048703 A1 WO 1997048703A1 US 9616913 W US9616913 W US 9616913W WO 9748703 A1 WO9748703 A1 WO 9748703A1
Authority
WO
WIPO (PCT)
Prior art keywords
carbon atoms
group
alkyl
hydrogen
moiety contains
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US1996/016913
Other languages
English (en)
French (fr)
Inventor
Kyle J. Lindstrom
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
3M Co
Original Assignee
Minnesota Mining and Manufacturing Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to DK96936832T priority Critical patent/DK0912564T3/da
Priority to EP96936832A priority patent/EP0912564B1/en
Priority to NZ333168A priority patent/NZ333168A/xx
Priority to JP10502897A priority patent/JP2000512994A/ja
Priority to AT96936832T priority patent/ATE230744T1/de
Priority to IL12734796A priority patent/IL127347A/en
Application filed by Minnesota Mining and Manufacturing Co filed Critical Minnesota Mining and Manufacturing Co
Priority to AU74658/96A priority patent/AU717564B2/en
Priority to DE69625712T priority patent/DE69625712T2/de
Publication of WO1997048703A1 publication Critical patent/WO1997048703A1/en
Priority to NO19986001A priority patent/NO315086B1/no
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D471/00—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00
    • C07D471/02—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00 in which the condensed system contains two hetero rings
    • C07D471/04—Ortho-condensed systems

Definitions

  • This invention relates to processes for preparing 6,7,8,9-tetrahydro-lH- imidazo[4,5-c]qiJJno-h-4-amines.
  • X is selected from the group consisting of alkoxy containing one to about four carbon atoms, alkoxyalkyl wherein the alkoxy moiety contains one to about four carbon atoms and the alkyl moiety contains one to about four carbon atoms, alkylamido wherein the alkyl group contains one to about four carbon atoms, amino, substituted amino wherein the substituent is alkyl or hydroxyalkyi of one to about four carbon atoms, and morpholinoalkyl wherein the alkyl moiety contains one to about four carbon atoms, and
  • a 4-amino-6,7,8,9-tetrahydro-lH- imidazo[4,5-c]quinoline of Formula I is provided by reducing a 4-amino-lH- imidazo[4,5-c]quinoline of Formula II.
  • the reduction is carried out by suspending or dissolving a compound of Formula II in a strong acid (e.g., trifluoroacetic acid or concentrated sulfuric acid), adding a catalytic amount of platinum (TV) oxide, then subjecting the mixture to hydrogen pressure [25 to 100 psi (1.72 X 10 5 to 6.89 X 10 s Pa)].
  • a solvent such as ethanol may be included.
  • the reaction is preferably carried out by combining a compound of Formula V with a base, preferably an excess of a tertiary amine base (e.g., a trialkylamine base such as triethyl amine) in a suitable solvent such as dichloromethane and then adding the sulfonyl halide or sulfonic anhydride.
  • a base preferably an excess of a tertiary amine base (e.g., a trialkylamine base such as triethyl amine) in a suitable solvent such as dichloromethane and then adding the sulfonyl halide or sulfonic anhydride.
  • the addition is preferably carried out in a controlled fashion (e.g., dropwise) and at a reduced temperature (e.g., about 0°C).
  • the product can be isolated by conventional methods or it can be carried on without isolation as described below in connection with step (3).
  • Reaction Scheme IV wherein R, Ri and R 2 are as defined above, illustrates a process of the invention.
  • Compounds of Formula X and methods for their preparation are known and disclosed, e.g., in European Patent Application 90.301776.3, U.S. Pat Nos. 4,689,338 (Gerster), 4,698,348 (Gerster), 4,988,815 (Andre), and 5,389,640 (Gerster) all four patents being incorporated herein by reference.
  • a 4-hydrazino-lH-imidazo[4,5- c]quinoline of Formula XI is provided by reacting a 4-chloro-lH-imidazo[4,5- cjquinoline of Formula X with hydrazine.
  • the reaction can be carried out by combining a compound of Formula X with an excess of hydrazine and heating if necessary.
  • the product can be isolated from the reaction mixture using conventional methods.
  • a 6H-imidazo[4,5-c]tetrazolo[l,5- ajquinoline of Formula HI is provided by reacting a 4-hydrazino-lH-imidazo[4,5- cjquinoline of Formula XI with sodium nitrite.
  • the reaction can be carried out by combining the compound of Formula XI with sodium nitrite in a suitable solvent (e.g., water) in the presence of an acid (e.g., acetic acid).
  • a suitable solvent e.g., water
  • an acid e.g., acetic acid
  • Step (3) of Reaction Scheme IV can be carried out in the same manner as step (6) of Reaction Scheme H.
  • the compounds of Formula I can be used in the form of acid addition salts such as hydrochlorides, dihydrogen sulfates, trihydrogen phosphates, hydrogen nitrates, methane sulfonates and salts of other pharmaceutically acceptable acids.
  • Pharmaceutically acceptable acid addition salts of Formula I are generally prepared by reaction of the respective compound with an equimolar amount of a strong acid, preferably an inorganic acid such as hydrochloric, sulfuric or phosphoric acid or an organic acid such as methanesulfonic acid in a polar solvent. Isolation of the salt is facilitated by the addition of a solvent in which the salt is insoluble (e.g., diethyl ether).
  • R t substituents are straight chain and branched chain alkyl containing one to about eight carbon atoms and hydroxyalkyi wherein the alkyl moiety contains one to about six carbon atoms.
  • the most preferred Ri substituents are 2-methylpropyl and 2-hydroxy-2-methylpropyl.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Nitrogen Condensed Heterocyclic Rings (AREA)
  • Other In-Based Heterocyclic Compounds (AREA)
PCT/US1996/016913 1996-06-21 1996-10-22 Process for preparing tetrahydroimidazoquinolinamines Ceased WO1997048703A1 (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
EP96936832A EP0912564B1 (en) 1996-06-21 1996-10-22 Process for preparing tetrahydroimidazoquinolinamines
NZ333168A NZ333168A (en) 1996-06-21 1996-10-22 Process for preparing 6,7,8,9-tetrahydro-1h-imidazo[4,5-c]quinolin-4-amine derivatives
JP10502897A JP2000512994A (ja) 1996-06-21 1996-10-22 テトラヒドロイミダゾキノリンアミン調製方法
AT96936832T ATE230744T1 (de) 1996-06-21 1996-10-22 Verfahren zur herstellung von tetrahydroimidazochinolinaminen
IL12734796A IL127347A (en) 1996-06-21 1996-10-22 Processes for preparing tetrahydroimidazo-quinolinamines
DK96936832T DK0912564T3 (da) 1996-06-21 1996-10-22 Fremgangsmåde til fremstilling af tetrahydroimidazoquinolinaminer.
AU74658/96A AU717564B2 (en) 1996-06-21 1996-10-22 Process for preparing tetrahydroimidazoquinolinamines
DE69625712T DE69625712T2 (de) 1996-06-21 1996-10-22 Verfahren zur herstellung von tetrahydroimidazochinolinaminen
NO19986001A NO315086B1 (no) 1996-06-21 1998-12-18 Fremgangsmåte til fremstilling av tetrahydroimidazokinolinaminer

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/669,895 US5693811A (en) 1996-06-21 1996-06-21 Process for preparing tetrahdroimidazoquinolinamines
US08/669,895 1996-06-21

Publications (1)

Publication Number Publication Date
WO1997048703A1 true WO1997048703A1 (en) 1997-12-24

Family

ID=24688154

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1996/016913 Ceased WO1997048703A1 (en) 1996-06-21 1996-10-22 Process for preparing tetrahydroimidazoquinolinamines

Country Status (14)

Country Link
US (1) US5693811A (https=)
EP (1) EP0912564B1 (https=)
JP (1) JP2000512994A (https=)
AT (1) ATE230744T1 (https=)
AU (1) AU717564B2 (https=)
CA (1) CA2258262A1 (https=)
DE (1) DE69625712T2 (https=)
DK (1) DK0912564T3 (https=)
ES (1) ES2185808T3 (https=)
IL (1) IL127347A (https=)
NO (1) NO315086B1 (https=)
NZ (1) NZ333168A (https=)
PT (1) PT912564E (https=)
WO (1) WO1997048703A1 (https=)

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CA2258262A1 (en) 1997-12-24
AU7465896A (en) 1998-01-07
US5693811A (en) 1997-12-02
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EP0912564A1 (en) 1999-05-06
NZ333168A (en) 1999-05-28
NO986001L (no) 1998-12-18
NO315086B1 (no) 2003-07-07
DE69625712T2 (de) 2003-11-13
IL127347A0 (en) 1999-10-28
DE69625712D1 (de) 2003-02-13
NO986001D0 (no) 1998-12-18
AU717564B2 (en) 2000-03-30
PT912564E (pt) 2003-04-30

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